Abstract:

I will take you on a journey through the history of the Tkachenko wave, the vibration of the vortex lattice in a rotating superfluid that can be considered the Goldtone boson shared by several spontaneous broken symmetries. This special Goldstone boson excitation has many unique properties that emerge at low energy. By examining this wave through the lens of modern quantum field theory, I will provide insight into its unusual characteristics and reveal why it is so remarkable.